Date.prototype.format = function(format)

{
	var o = {
		"M+": this.getMonth() + 1, //month

		"d+": this.getDate(), //day

		"h+": this.getHours(), //hour

		"m+": this.getMinutes(), //minute

		"s+": this.getSeconds(), //second

		"q+": Math.floor((this.getMonth() + 3) / 3), //quarter

		"S": this.getMilliseconds() //millisecond

	}

	if (/(y+)/.test(format)) format = format.replace(RegExp.$1,

		(this.getFullYear() + "").substr(4 - RegExp.$1.length));

	for (var k in o)
		if (new RegExp("(" + k + ")").test(format))

			format = format.replace(RegExp.$1,

				RegExp.$1.length == 1 ? o[k] :

				("00" + o[k]).substr(("" + o[k]).length));
	return format;

}
